FileHandler2: use cleanPath in fullPath(s) functions

vispa/static/js/filehandler2.js

@@ -126,7 +126,7 @@ define([
 
   M.clsBib.single = M.clsBib.base._extend({
     fullPath: function (info) {
-      return (info.pathBase + "/" + info.data.name).replace(/\/+/g, "/");
+      return Utils.cleanPath(info.pathBase + "/" + info.data.name);
     },
     ext: function (info) {
       if (!info.data) return;
@@ -197,7 +197,7 @@ define([
       return (_items || this.items(info)).map(function (it) {
         if (processing)
           it.processing = true;
-        return info.pathBase + "/" + it.name;
+        return Utils.cleanPath(info.pathBase + "/" + it.name);
       });
     },